Rok 2024

• Impact of Brake Wear Particles on Eukaryotic Cell Viability and Associated Oxidative Stress Responses

  Publikacja

  • L. Trečiokaitė
  • Y. Tsybrii
  • O. Nosko
  • L. Ragelienė

  - Lubricants - Rok 2024

  In this study, the cytotoxic effects of brake wear particles (≥250 nm ceramic/ceramic wear particles (CCWPs) and ≤100 nm ceramic/steel wear particles (CSWPs)) and 100 nm iron (III) oxide ultrafine particles (IOUFPs) on human lung carcinoma (A549) and Chinese hamster ovary (CHO) cells were investigated. Cell viability was determined using the MTT and Calcein AM methods. Oxidative stress was assessed by measuring reactive oxygen...

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Rok 2019

• Tribological Anti-Wear and Extreme-Pressure Performance of Multifunctional Metal and Nonmetal Doped C-based Nanodots

  Publikacja

  • . Tomala
  • . Kumar
  • . Porat
  • . Michalczewski
  • . Gedanken
  • R. Michalczewski

  - Lubricants - Rok 2019

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Rok 2018

• Improvement of Thrust Bearing Calculation Considering the Convectional Heating within the Space between the Pads

  Publikacja

  • M. Chmielowiec-Jablczyk
  • A. Schubert
  • C. Kraft
  • H. Schwarze
  • M. Wodtke
  • M. Wasilczuk

  - Lubricants - Rok 2018

  A modern thrust bearing tool is used to estimate the behavior of tilting pad thrust bearings not only in the oil film between pad and rotating collar, but also in the space between the pads. The oil flow in the space significantly influences the oil film inlet temperature and the heating of pad and collar. For that reason, it is necessary to define an oil mixing model for the space between the pads. In the bearing tool, the solutions...

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Rok 2017

• Field Tests on Hydrodynamic and Hybrid Operation of a Bidirectional Thrust Bearing of a Pump-Turbine

  Publikacja

  • M. Wasilczuk
  • M. Wodtke
  • L. Dąbrowski

  - Lubricants - Rok 2017

  In vertical shaft pump turbines operating in pumped storage power plants an important role is played by a thrust bearing. Due to the bidirectional character of operation, thrust bearing tilting pads have to be supported symmetrically, which is known to be unfavourable from the point of view of their performance. Large thrust bearings have to be carefully designed so as to minimise excessive thermo-elastic pad deformations. The...

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Rok 2015

• Friction and Lubrication of Large Tilting-Pad Thrust Bearings

  Publikacja

  • M. Wasilczuk

  - Lubricants - Rok 2015

  Fluid film bearings have been extensively used in the industry because of their unbeatable durability and extremely low friction coefficient, despite a very low coefficient of friction dissipation of energy being noticeable, especially in large bearings. Lubricating systems of large tilting pad thrust bearings utilized in large, vertical shaft hydrogenerators are presented in this paper. A large amount of heat is generated due...

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